Stripe Rust of Wheat

See where stripe rust of wheat has been found this season using this map. Stripe rust (also known as yellow rust) is caused by the pathogen Puccinia striiformis f. sp. tritici. It is a fungal disease that affects wheat throughout much of the world. Stripe rust can occur anywhere in the U.S. and Canada, causing substantial yield losses when conditions are favorable. It is also known as yellow rust. Initially, symptoms are yellowish flecks on leaves. On susceptible varieties, pustules containing yellow-orange spores erupt from leaves.